<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        /*滚动条整体部分*/
        .gongjiao_text::-webkit-scrollbar {
            width: 20px;
            height:20px;
        }
        /*滚动条滑轨*/
        .gongjiao_text::-webkit-scrollbar-track{}
        /*内层轨道，滚动条中间部分*/
        .gongjiao_text::-webkit-scrollbar-track-piece{}
        /*滚动条滑块*/
        .gongjiao_text::-webkit-scrollbar-thumb {}
        /*还可设置鼠标移动上去时的变化*/
        .gongjiao_text::-webkit-scrollbar-track:hover {}
        .gongjiao_text::-webkit-scrollbar-thumb:hover {}
        .gongjiao_text::-webkit-scrollbar-button:start:hover {}
        .gongjiao_text::-webkit-scrollbar-button:end:hover {}
    </style>
</head>
<body>

</body>
</html>